Hey abhi,
That's is important. Your 10th and 12th marks are a part of process while evolves around placements. Yes most companies have a certain criteria of 60% but thats just to get less students to interview. Its like using filters on Amazon or Flipkart. But that's only when you are in college placements. As there is huge number of students so they select a few. You can always go on a walk in interview. The 60% criteria is just for on campus placements. So just be concern for you bachelor's score well. If you scored well in bachelor's and you are talented then relax it's your day then.
Best Of Luck
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